everything petrol
New member
- 21
- 10
- 3
- Location
- CA
So recently I've been on this journey to find the source of what's draining the life from the pigs 6.5. It starts right up, runs well but there's a lack power and on hard accelerations, there's more black smoke than usual. New oil leaks were getting worse. Well I see the light at the end of the tunnel.
I first noticed fuel seeping from the mechanical fuel pump at the bottom of the block... swapped that sucker out thinking air was getting into the fuel supply line. It ran better, still had the smoke though. Somewhere online was mention of the CDR valve having issues. This guy swears all you need to do is clean it out- said he won tons of bets on deployment with guys who though their rigs had catastrophic failures. Turns out to be the CDR most of the time. The telltale sign is if there's a good amount of oil in the supply line to the CDR valve. After I cleaned it out with some seafoam and reinstalled it, everything was resolved. My CDR was stuck closed creating back pressure in the crankcase causing the oil leaks and improper mixtures. Once again the ground under the Humvee is bone dry. Highly recommend cleaning out your CDR and inspect your fuel pump while you're at it. Thought I'd share the love.
I first noticed fuel seeping from the mechanical fuel pump at the bottom of the block... swapped that sucker out thinking air was getting into the fuel supply line. It ran better, still had the smoke though. Somewhere online was mention of the CDR valve having issues. This guy swears all you need to do is clean it out- said he won tons of bets on deployment with guys who though their rigs had catastrophic failures. Turns out to be the CDR most of the time. The telltale sign is if there's a good amount of oil in the supply line to the CDR valve. After I cleaned it out with some seafoam and reinstalled it, everything was resolved. My CDR was stuck closed creating back pressure in the crankcase causing the oil leaks and improper mixtures. Once again the ground under the Humvee is bone dry. Highly recommend cleaning out your CDR and inspect your fuel pump while you're at it. Thought I'd share the love.
